Minor fix to SFC Tacker post-install script

- Dont try to install crudini via apt-get. It will be
  installed via wget and dpkg.
- patch set 2 : removed extra single quote
- patch set 3 : fixing ssh/scp permission errors by using sshpass

Change-Id: I3bfd59c44c4c1a5da6473b5f620b71e7c8e3680c
Signed-off-by: Brady Johnson <brady.allen.johnson@ericsson.com>
(cherry picked from commit 2b5a8776687cb5954cbd46ddf567cdc6ecba7e17)